Valve.



No. 841,133. PATENTED JAN. 15, 1907. H. O. FARRELL.

VALVE. I

APPLICATION FILED MAY 31, 1905.

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HENRY C. FARRELL, OF BUFFALO, NEW YORK. v

VALVE.

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed May 31, 1905. SerialNo. 263,118-

To all whom it may concern:

Be it known that I, HENRY OJFARRELL, a citizen of the- United States, residing at Buffalo, in the county of Erie and State of New York, ave invented a new and useful Improvement in Valves, of which the following is a specification.

- This invention relates to a valve in which the stopper is spherical or ball-shaped.

The object of this invention is the production of a valve of this character in which the ball-shaped stopper is connected with the stem by means which are very simple and inexpensive in construction and which permit of moving the stopper positively toward and from its seat and yet enable the same to change'its position circumferentially, so as to present new surfaces to the seat, and thus prevent the stopper from wearing in one place and eventually causing leakage.

In the accompanying drawings, Figure 1 a longitudinal section of a valve having a ball-stopper connected with the stem in accordance with my invention. Fig. 2 is a fragmentary section in line 2 2, Fig. 1. Fig. 3 is a front end view of the ball-stopper and the cage, whereby the same is connecte with the stem.

Similar letters of reference indicate corresponding parts throughout the several views.

A represents the casing of the valve B, the removable valve-seat arranged in the diaphragm between the inlet and outlet of the casing; C, the spherical or ball-shaped stopper, which is movable toward and from said seat for opening and closing the valve, and D the valve-stem whereb the stopper is shifted. This stem is mova le lengthwise by means of a screw connection 6 with the honnet E of the valve-casing, and its inner or front end is provided with a circular head f.

G represents the cage or coupling whereby the valve-stem and stopper are connected. This cage consists of a ring or collar g, which surrounds the inner or front end of the stem and has a forwardly-facing shoulder g, which bears against a corresponding shoulder on the back of the head f, and a plurality of claws or jaws h projecting forwardly from the ring 9 on different sides of the ball-stopper and engaging their front ends, with the stopper in front of its swell 0r largest diameter.

The jaws are formed integrally with the Bing,

and their front ends are disconnected from each other, so that the entire ,cage consists of but a single piece.

In assemblin the parts the ring of the cage is slipped orwardly over the stem and engaged w1th the back of the head thereon while thesame is detached from the bonnet and the handle 6 at its outer end. It is possible to slip the cage over the stem in this manner on account of the opening in its ring being sufficiently large to permit of passing the ring over the screw-thread of the stem.

Preparatory to receiving the ball-stopper between them the jaws "o the cagefare spread apart sufficiently to permit the swell or largest diameter of'the 'sto penjtopassthe free outer or front ends of lhe jaws. After the stopper has been introducedlbetween the jaws the front ends of the same are pinched .hold each other in their proper relative position without the use of any separate device for this purpose, thus producing an exceedingly simple construction, which is not liable to get out of order. This means of connecting the stopper with the stem causes the stopper to move ositively with the stem toward and from t e"'seat;'jbut sufficient looseness is providedf'between the ball-stopper, stem-head, and cage-jaws to permit the stopper to turn freely and prevent the wear from being concentrated on one place and causing the same to be distributed over difierent parts of the stopper, thereby prolongin the hfe of the valve and reducing the possibi ity of leakage to a minimum.

While new valves constructed in accordance with my invention are superior to those heretofore in use, my improvement is equally desirable for repairing old valves having flat stoppers, inasmuch as no change is required in the present form of valve-stems for permitting the application thereto of a ballstopper by my improved 'connectlng-cage.

I claim as my invention A valve com rising a casing having a seat, a ball-stopper or cooperating with said seat, a valve-stem movable toward and from said. seat and having a head at its inner end which bears against"the baol: of the stopper, and a holds the coupling against backward move- [0 coupling consisting of a ring bearing a ainst I ment on the stem, substantially as set forth.

' a shoulder on the back of said head an hav- Witness my hand this 27th day of May,

1 its largest ifng a pgfilrfiity ofiptegral aws k:vhich exteirlld 1905.

orwar y omsai 1'" an are entinwar so as to euilage witfi ie stopper in front 31 HENRY FARRELL ameter, whereby the stopper is Witnesses:

held by the couphni against forward move- THEO. L. POPP, ment relatively .to t e stem and the stopper E. M. GRAHAM. 

